Until last week, all bird flu in dairy herds had been identified as the B3.13 variant, which was believed to have come from ...

The new H5N1 version, known as D1.1, was found in dairy cattle in Nevada and is different than the B3.13 type that has spread ...

A new variant of the H5N1 bird flu — the same one that led to the death of a Louisiana man — has for first the first time ...

The detection indicates that distinct forms of the virus known as Type A H5N1 have spilled over from wild birds into cattle ...

Six dairy herds in Nevada have tested positive for a newer variant of the H5N1 bird flu virus that’s been associated with ...

The detection indicates that distinct forms of the virus known as Type A H5N1 have spilled over from wild birds into cattle ...

A version of the H5N1 virus that has killed one person and severely sickened another has been detected in milk samples ...

A version of the H5N1 bird flu virus that killed a person in Louisiana and severely sickened a teenager in Canada has now ...

Nevada dairy cattle infected with a new bird flu strain, Type A H5N1 D1.1, raising concerns of multiple transmission channels ...

Experts said the discovery raises questions about how widely the virus has spread, and underscores the difficulty of ...

For the first time, a new genotype of avian influenza has been identified in U.S. dairy cows, prompting biosecurity efforts.